如何在Powershell中使用System.Threading.Thread？开发者社区

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using System;
using System.Threading;
namespace ThreadingTest
    class ThreadingTest
        public delegate void UpdateElementCallback(string message);
        public ThreadingTest() {
            Console.WriteLine("Hello from Thread " + Thread.CurrentThread.ManagedThreadId);
            Thread newThread = new Thread(new ThreadStart(MethodToBeCalledFromAnotherThread));
            newThread.Start();
        private void UpdateElement(string message) {
            Console.WriteLine(message + Thread.CurrentThread.ManagedThreadId);
        private void MethodToBeCalledFromAnotherThread() {
            UpdateElement("Hello from Thread ");
}

Hello from Thread 1
Hello from Thread 4

Add-Type -AssemblyName System
Add-Type -AssemblyName System.Threading
class ThreadingTest {
    [Action[String]]$UpdateElementCallback = 
        param([String]$message) 
        $callBackThread = [System.Threading.Thread]::CurrentThread.ManagedThreadId
        "$message $callBackThread" | Out-Host
    # Constructor
    ThreadingTest() {
        # Get current thread id
        $currentThread = [System.Threading.Thread]::CurrentThread.ManagedThreadId
        # Print current thread id
        "Hello from Thread $currentThread" | Out-Host
        # Create a new thread (This line fails)
        $newThread = [System.Threading.Thread]::new([System.Threading.ThreadStart]::new($this.UpdateElementCallback))
        $newThread.Start
$ThreadingTestObject = [ThreadingTest]::new()

Hello from Thread 21
MethodException: .../ThreadingTest.ps1:21:9
Line |
  21 |          $newThread = [System.Threading.Thread]::new([System.Threading …
     |          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     | Cannot find an overload for "new" and the argument count: "1".

$code = @"
using System;
using System.Threading;
namespace ThreadingTest
    public class ThreadCreator
        public Thread CreateAThread(ThreadStart threadStart) {
            return new Thread(threadStart);
        public ThreadStart CreateAThreadStart(Action threadStart) {
            return new ThreadStart(threadStart);
Add-Type -TypeDefinition $code -Language CSharp 
class ThreadingTestClass {
    $ThreadCreator
    [System.Threading.Thread] $NewThread
    [bool] $finishCountingThread = $false
    [int] $ClassThreadId
    # Constructor
    ThreadingTestClass() {
        # Get the current thread id
        $this.ClassThreadId = [System.Threading.Thread]::CurrentThread.ManagedThreadId
        # Print current thread id
        Write-Host "Hello from " -NoNewline
        Write-Host "Thread $($this.ClassThreadId)" -ForegroundColor Green
        # Create a ThreadCreator object
        $this.ThreadCreator = Invoke-Expression "[ThreadingTest.ThreadCreator]::new()"
        # Get a [System.Threading.Thread] object from the C# code to run '[Void] MethodToBeCalledFromAnotherThread()' in another thread
        $this.NewThread = $this.ThreadCreator.CreateAThread($this.ThreadCreator.CreateAThreadStart($this.MethodToBeCalledFromAnotherThread))
        # Start the thread
        $this.NewThread.Start()
        # Wait for user to press Escape. This 'do until' is executed while the other thread is running in the background. It doesn't wait for $this.NewThread to finish
            $keyPressed = [System.Console]::ReadKey().Key 
        } until ($keyPressed -eq [System.ConsoleKey]::Escape)
        # Set the $finishCountingThread variable to stop counting
        $this.finishCountingThread = $true;
        # Wait for the thread to finish gracefully before ending
        $this.NewThread.Join()
    [Void] MethodToBeCalledFromAnotherThread() {
        # Get the current thread id
        $currentThreadID = [System.Threading.Thread]::CurrentThread.ManagedThreadId
        # Say hello from the thread this method is running on
        Write-Host "Hello from " -NoNewline
        Write-Host "Thread $currentThreadId" -ForegroundColor Blue
        # Count from 0 to 10000
        for ($i = 0; $i -le 10000; $i++) {
            # Check boolean to know whether to finish counting or not
            if($this.finishCountingThread) {
                Write-Host "`nFinishing spawned " -NoNewline
                Write-Host "Thread $currentThreadID..." -ForegroundColor Blue
                break 
            # Print on the console the current value of $i
            Write-Host "`rPress ESC to stop spawned " -NoNewline
            Write-Host "Thread $currentThreadID " -NoNewline -ForegroundColor Blue
            Write-Host "and quit program: " -NoNewline 
            Write-Host "[Counting $i in Thread $currentThreadID] " –NoNewline -ForegroundColor Blue
            Write-Host "Keys are being listened to on " -NoNewline
            Write-Host "Thread $($this.ClassThreadId)" -NoNewline -ForegroundColor Green
        # Check if the counting finished before the user pressed Escape
        if (-Not $this.finishCountingThread) {
            "`nCounting finished" | Out-Host
            "Press ESC to quit program..." | Out-Host
# Set cursor visible to false to see colors without a jittering cursor
[System.Console]::CursorVisible = $false
"`n`n" | Out-Host
$ThreadingTestClassObject = [ThreadingTestClass]::new()
"`n`n" | Out-Host

class ThreadingTestClass {
    [System.ComponentModel.BackgroundWorker] $BackgroundWorker
    [bool] $finishCountingThread = $false
    [int] $ClassThreadId
    # Constructor
    ThreadingTestClass() {
        # Get the current thread id
        $this.ClassThreadId = [System.Threading.Thread]::CurrentThread.ManagedThreadId
        # Print current thread id
        Write-Host "Hello from " -NoNewline
        Write-Host "Thread $($this.ClassThreadId)" -ForegroundColor Green
        # Create a BackgroundWorker object, set the event and set it to support cancellation
        $this.BackgroundWorker = [System.ComponentModel.BackgroundWorker]::new()
        $this.BackgroundWorker.add_DoWork($this.MethodToBeCalledFromAnotherThread)
        $this.BackgroundWorker.WorkerSupportsCancellation = $true
        # Run the method 'MethodToBeCalledFromAnotherThread' in another thread
        $this.BackgroundWorker.RunWorkerAsync()
        # Wait for user to press Escape. This 'do until' is executed while the other thread is running in the background. It doesn't wait for $this.BackgroundWorker to finish
            $keyPressed = [System.Console]::ReadKey().Key 
        } until ($keyPressed -eq [System.ConsoleKey]::Escape)
        # Set the $finishCountingThread variable to stop counting
        $this.finishCountingThread = $true
        if ($this.BackgroundWorker.WorkerSupportsCancellation -and $this.BackgroundWorker.IsBusy) {
            # Cancel the background worker work
            $this.BackgroundWorker.CancelAsync()
            # while loop only needed if there is no GUI or anything else preventing PS from continuing and trying to exit
            while ($this.BackgroundWorker.IsBusy) {
                # Do nothing. Block calling thread and wait for the Background worker to finish cancelling
                # Otherwise, Powershell will continue to execute code further and it can
                # end code execution while there is another thread in the background
                # That will cause an exception and a crash
                # GUIs usually prevent PowerShell from exiting
                # for which this may not be needed in a Form or WPF application
    [Void] MethodToBeCalledFromAnotherThread([Object]$sender, [System.ComponentModel.DoWorkEventArgs]$e) {
        # Get the current thread id
        $currentThreadID = [System.Threading.Thread]::CurrentThread.ManagedThreadId
        # Say hello from the thread this method is running on
        Write-Host "Hello from " -NoNewline
        Write-Host "Thread $currentThreadId" -ForegroundColor Blue
        # Count from 0 to 10000
        for ($i = 0; $i -le 10000; $i++) {
            # Check boolean to know whether to finish counting or not
            if($this.finishCountingThread) {
                Write-Host "`nFinishing spawned " -NoNewline
                Write-Host "Thread $currentThreadID..." -ForegroundColor Blue
                break 
            # Print on the console the current value of $i
            Write-Host "`rPress ESC to stop spawned " -NoNewline
            Write-Host "Thread $currentThreadID " -NoNewline -ForegroundColor Blue
            Write-Host "and quit program: " -NoNewline 
            Write-Host "[Counting $i in Thread $currentThreadID] " –NoNewline -ForegroundColor Blue
            Write-Host "Keys are being listened to on " -NoNewline
            Write-Host "Thread $($this.ClassThreadId)" -NoNewline -ForegroundColor Green
        # Check if the counting finished before the user pressed Escape
        if (-Not $this.finishCountingThread) {
            "`nCounting finished" | Out-Host
            "Press ESC to quit program..." | Out-Host

问 如何在Powershell中使用System.Threading.Thread？ EN

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